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• Entity data field validation and part data submission

  - by pradeeptp

  I have an entity class that has 10 fields. I am using MS Validation Application block to mark all fields as mandatory (IsRequired). I am implementing a securiy feature in which during updation of the data, not all the fields in the entity class will have data. For example a few users can only view 5 fileds while others all 10 fields during updation on GUI I have the following options 1) Bring all the data for all the fields from the DB table and hide the ones not accessible to the users in GUI. I am concerned about the performance because everytime GUI will pull unncessary data. 2) Bring the data (e.g. only 5 fields) that are permissible for access/view by the user on GUI. During submit, validation block will throw exception because all fields are marked as IsRequired and only data for 5 fields are sent back to the server. I want to know if there are any other good approaches to solve problems like this. I am using .NET 3.5 Thanks.

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• How to update control state in asp.net/ajax?

  - by darth_alexious

  I'm trying to update certain controls according to a selection in a dropdown list. For example, in the "selectedIndexChanged" event of a dropDownList, if a user selects the value "sport-car" the text box "payload" is disabled and the textbox "max speed" is enabled. private sub dropDownList1_SelectedIndexChanged(byval sender as object, byval e as eventargs) handles dropDownList1.SelectedIndexChanged If dropDownList1.selectedValue = "sport-car" then textBox_payLoad.enabled = false textBox_maxSpeed.enabled = true end if end sub When I'm doing something like this, the controls aren't enabled/disabled, even the event (wich I've added a breakpoint) seems not to be raised (sometimes several time after it is raised). Also, when the instructions in the condition is executed, nothing changes. What am I doing wrong? Maybe this is a very easy issue, but I'm a begginer in MS Visual Web Developer.

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• Call function in query in Entity framework 3.5

  - by Ashwani K

  Hello All: I am trying to run following query in entity framework 3.5 var test = from e in customers where IsValid(e) select e; Here IsValid function takes current customer and validate against some conditions and returns false or true. But when I am trying to run the query it is giving error "LINQ Method cannot be translated into a store expression." Can any body tell me any other approach? One approach I can think of is to write all validation conditions here, but that will make the code difficult to read. Thanks Ashwani

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• Display Computer Info on an ASP.NET Page

  - by Gene

  I want to build a page for end users to visit (in our MPLS Network) and it show the following information in regards to them: Computer Name OS Disk Space Memory IP Address Active Directory User Name Password Expiration Time (As defined by Global Policy) Maybe a few other things such as Trend Micro Office current version vs. their version, # of MS Updates needed (we utilize WSUS), and a few other things in the future. My question is how would I pull this information from the user when they visit the page? What is the proper function for this? Anyone have examples they wish to share for me to learn by if possible?

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• How do I use global resources in WPF?

  - by Banford

  I have a WPF application which I would like to use some static resources in. I have created a Resource Library XAML file which contains a resource. I have also added a string into the Resources of the project through the Properties panel. I assumed I could just use these resources with the binding expression: {StaticResource ResourceName} But visual studio is telling me the resources are not found. Do I have to include some form of reference in my XAML? The examples I have seen only include resources locally such as: <Window.Resources>, <Page.Resources> etc I don't want to include the resources locally because I want them to be available to multiple parts of the application.

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• .NET: Best way to execute a lambda on UI thread after a delay?

  - by Scott Bussinger

  I had a situation come up that required running a lambda expression on the UI thread after a delay. I thought of several ways to do this and finally settled on this approach Task.Factory.StartNew(() => Thread.Sleep(1000)) .ContinueWith((t) => textBlock.Text="Done",TaskScheduler.FromCurrentSynchronizationContext()); But I'm wondering if there's an easier way that I missed. Any suggestions for a shorter, simpler or easier technique? Assume .NET 4 is available.

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• Retrieve baseUri w/o resorting to Application.Current

  - by beaudetious

  My custom controls are not loading in VS.NET's designer because of a null reference exception. It's got everything to do with the way I am retrieving the baseUri of the application when it runs in the browser: _uriPrefix = Application.Current.Host.Source.AbsoluteUri.Substring(0, Application.Current.Host.Source.AbsoluteUri.IndexOf("/ClientBin")).Trim(); According to the exception details and the help file I'm directed to (here) I'm not correctly designing my app for a runtime that's not the browser (i.e. the new WPF editor in VS.NET or Expression Blend). So, the question is how do retrieve the baseUri (the http://localhost:#### part of my application) if I can't use Application.Host which apparently is null during design time? is there a safe way to do this so I can load my custom controls in a designer?

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• SSRS default renderer strips html tags

  - by stackoverflowuser

  For TFS task work item, I copy a table from ms word 2003/2007 document and paste it into the description field (supports rich text). When the task item is saved, correct formatting is saved in TFS database table. But when the same data is displayed in a SSRs report (through report manager) the formatting is lost. Probably the ssrs rendering engine is stripping off the tags. I have the "HTML-Interpret HTML tags as styles" enabled for the report field. It will be of great help if someone can provide more information on this issue and how it can be handled. Thanks.

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• Regex for Searching for Text Not Preceeded By a Specific String

  - by James

  Hi, I am working on a web site with several other developers and we have had problems where people commit JavaScript code with AJAX calls that use URL's relative to the site root. An example would be /Home/Index which will not work if the site is hosted in a virtual directory. To get round the problem we use a $.url() method to convert it to a full path, e.g. $("#container").load($.url("/Home/Index")) I am trying to write a unit test that will search each JavaScript file and find places where the $.url method is not being used. The only problem is that I cannot seem to write a regex expression to do this. I have tried the following: (?!\$\.url\()"(/\w*)+" But this does not work. I cannot find a way to say that I don't want the $.url in front. Does anyone know if this is possible? Note that I need regular expressions that are compatible with .NET Thanks.

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• LINQ to Entities and Business / Validation Rules

  - by Chris

  We have a requirement where we need to allow users to dynamically create custom reports that will run against our database and return sets of data. It would be something similar to this: http://www.marcuswhitworth.com/2009/12/dynamic-linq-with-expression-trees/ but would ultimately contain the ability to create more complicated logic. I believe LINQ to Entities might possibly allow us to do something like we're attempting to achieve. I should note that these reports are going to need to run against multiple tables. Can anyone point me in the right direction for something like this? Has anyone done anything similar with LINQ to Entities?

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• Error openin microsoft.com with google chrome

  - by Ilnur

  Hi! I need help with my browsers. In my OS (windows 7 basic) installed 2 browsers: IE 8 and Google Chrome. When I trying to open pages, which associated with microsoft.com (like ms live and others), my browser crashes. IE 8 crashes too. But Opera (I've installed it later) works fine with that pages. P.S. I tried to search the trojan software and viruses. But my PC is clean.

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• Passing functions as arguements in Matlab

  - by Dave

  Hi, I'm trying to write a function that is gets two arrays and the name of another function as arguements. e.g. main.m: x=[0 0.2 0.4 0.6 0.8 1.0]; y=[0 0.2 0.4 0.6 0.8 1.0]; func2(x,y,'func2eq') func 2.m : function t =func2(x, y, z, 'func') //"unexpected matlab expression" error message here t= func(x,y,z); func2eq.m: function z= func2eq(x,y) z= x + sin(pi * x)* exp(y); Matlab tells gives me the above error message. I've never passed a function name as an arguement before. Where am I going wrong? p.s. sorry about the formatting of code above, I can't seems to get SO to show parts of the code as code.

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• perl ENV value avoid escape

  - by Michael

  In my makefile I have command in variable like this substitute := perl -p -e 's/@([^@]+)@/"$(update_url)"/ge' > output.txt update_url := em:updateURL=\"http:\/\/bla\/update.rdf\"\n this works fine when I run command in target and I have newline, quotes however I need to replace $(update_url)" with environment variable, using expression like this #substitute := perl -p -e 's/@([^@]+)@/defined $$ENV{$$1} ? $$ENV{$$1} : $$1/ge' I am exporting those variables from makefile. This gives me literally em:updateURL=\"http:\/\/bla\/update.rdf\"\n on output file... so how to make the second version to give output like first version?

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• NAnt IF task doesn't seem to work

  - by goombaloon

  I'm trying the example from the NAnt documentation for the if task at: http://nant.sourceforge.net/release/0.85/help/tasks/if.html Specifically the following code... <if test="${build.configuration='release'}"> <echo>Build release configuration</echo> </if> where build.configuration has been defined beforehand as <property name="build.configuration" value="debug" overwrite="false" /> When I run it using nant.exe (version 0.91.3881.0), I get the following error: '}' expected Expression: ${build.configuration='release'} ^ I'm guessing I'm missing something simple?

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• How to check html tag with Rspec

  - by Tetsu

  I'm learning from this site. I tested the following with rspec, and it passed. describe "About page" do it "should have the content 'About Us'" do visit '/static_pages/about' expect(page).to have_content('About Us') end end I changed About Us to <h1>About Us</h1> to check whether it works as I expected, but the test fails even when about.html.erb has the string <h1>About Us</h1>. Could you show me how I can use html tag expression in rspec file?

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• How to add debug assemblies to my Silverlight 2 application?

  - by Steve Wortham

  So I know now that the debug assemblies have been intentionally left out of the Silverlight runtime to save space. For that reason I get good detailed error messages on my local machine that has the Silverlight SDK on it, but I don't on a computer with the runtime only. I get the ubiquitous, "Debugging resource strings are unavailable." Unfortunately my requirements are a bit unique. I need to include the debug assembly (not sure which one yet) that will give me details of a regular expression error. And so essentially I want to include the dll in the xap if I can. The problem is that I can't seem to do this. I've tried adding the debug dll's as references and setting them to "copy local." And I've tried adding them into the project as content. But in fact, with either method the xap hardly grows in size and the error message doesn't change. Any ideas?

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• php regex replace slashes and spaces and hyphens

  - by Muhammad Shahzad

  I have fews combinations of strings that I need to bring in to one pattern, that is multiple spaces should be removed, double hyphens should be replaced with single hypen, and single space should be replaced with single hyphen. I have already tried this expression. $output = preg_replace( "/[^[:space:]a-z0-9]/e", "", $output ); $output = trim( $output ); $output = preg_replace( '/\s+/', '-', $output ); But this fails in few combinations. I need help in making all of these combinations to work perfectly: steel-black steel- black steel black I should also remove any of these as well "\r\n\t".

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• Win7: Right place to install a program that may be 'shared' with other computers

  - by robsoft

  We have an app that currently installs itself into 'program files\our app', and it puts the internal data files into the common Application Data folder. This means the program is available to any user on that particular PC. Now we want to make a multi-user version of this program, multiple PCs accessing the program at the same time across the network. In the bad old days, under XP, we'd just have the user who installed the app 'share' the app directory and off we'd go. In principle, is this still the 'right' way to do it under Vista/Windows 7? We'd like to do this 'properly' and be as compliant as possible! Is there a recommended 'Microsoft' approach for doing this, or is it largely down to whatever we can get away with and subsequently support (hah!). I've tried researching this on the MS websites but not found anything too helpful at all - it'd be really useful to have a 'if you're trying to install this kind of thing, put it here' type guide for developers!

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• Straight Line Equation between two points

  - by dafero

  Hi, I need to paint the line witch links two points. I developed my own solution using the straight line equation, but my results are different than using the "professional" programs (such as GIMP or even MS Paint). Here is a example of what I want: But my algorithm does this: *The green point is out of the figure and this is not possible. Any ideas? Anyone know which code is been using for this, in "professional" apps? Thanks! Daniel.

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• JMP instruction in Flex/bison

  - by Imran

  Hallo everybody, Can someone help me out of my situation, im searching for a instrucior that implements the JMP (Jump) instructior like in Assembler. I've found out that it could be withe the goto function of Flex/Bison but i have no really idea how to do. Have got anyone idea. Im very grateful of yours help. Thanks. Here is an example how it looks like. with the JMP instructor, he goes to the label L1. :L1 IF FLAG AND X"0001" EVT 23; ELSE WAIT 500 ms; JMP L1; END IF;

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• WPF with code only

  - by rwallace

  I've seen a lot of questions about the merits of WPF here, and essentially every answer says it's the bee's knees, but essentially every answer also talks about things like XAML, in many cases graphic designers and Expression Blend etc. My question is, is it worth getting into WPF if you're a solo coder working in C# only? Specifically, I don't have a graphic designer, nor any great talent in that area myself; I don't use point-and-click tools; I write everything in C#, not XML. Winforms works fine in those conditions. Is the same true of WPF, or does it turn out that important functions can only be done in XAML, the default settings aren't intended for actual use and you have to have a graphic designer on the team to make things look good, etc., and somebody in my position would be better off to stick to Winforms?

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• Determine if a string contains only alphanumeric characters (or a space)

  - by dreamlax

  I'm learning C++ and I am writing a function that determines whether a string contains only alphanumeric characters and spaces. I suppose I am effectively testing whether it matches the regular expression ^[[:alnum:] ]+$ but without using regular expressions. I have seen a lot of algorithms revolve around iterators, so I tried to find a solution that made use of iterators, and this is what I have: #include <algorithm> static inline bool is_not_alnum_space(char c) { return !(isalpha(c) || isdigit(c) || (c == ' ')); } bool string_is_valid(const std::string &str) { return find_if(str.begin(), str.end(), is_not_alnum_space) == str.end(); } Is there a better solution, or a “more C++” way to do this?

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• DNS Lookup in simple C#/asp.net ajax call is extremely slow

  - by Ryan

  I'm running this out of the VS 2008 debugger on Windows 7, running .Net 3.5. The idea was to make all ajax requests with jQuery only, rather than .net, following some tutorials online. Default.aspx - HTML page, jquery triggers method in Default.aspx.cs http://pastebin.com/pxBvKA2H Default.aspx.cs - C# Webform, just defines a GetDate fuction, which only returns a string for now (trying to eliminate any possible issues) (can only post one hyperlink...) pastebin.com/pnHn50hu The ajax query takes longer than it should. Profiling with firebug revealed that it took 1.03 ms. 1s DNS Lookup | 26ms Waiting | 1ms Receiving EDIT: It continues to take the same set of times if you continue to click and resubmit the request. Is there anything I can do to cut down on the DNS Lookup time / what did I do wrong? Thanks for any help.

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• Conditionally set a column to its default value in Postgres

  - by Evgeny

  I've got a PostgreSQL 8.4 table with an auto-incrementing, but nullable, integer column. I want to update some column values and, if this column is NULL then set it to its default value (which would be an integer auto-generated from a sequence), but I want to return its value in either case. So I want something like this: UPDATE mytable SET incident_id = COALESCE(incident_id, DEFAULT), other = 'somethingelse' WHERE ... RETURNING incident_id Unfortunately, this doesn't work - it seems that DEFAULT is special and cannot be part of an expression. What's the best way to do this?

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• SQL Server Express 2008 Stored Procedure execution time spikes periodically

  - by user156241

  I have a big stored procedure on a SQL Server 2008 Express SP2 database that gets run about every 200 ms. Normal execution time is about 50ms. What I am seeing is large inconsistencies in this run time. It will execute for while, say 50-100 times at 40-60ms which is expected, then seemingly at random the same stored procedure will take way longer, say 900ms or 1.5 seconds to run. Sometimes more than one call of the same procedure in a row will take longer too. It appears that something is causing sql server to slow down dramatically every minute or so, but I can't figure out what. There is no timing pattern between the occurences. I have the same setup on two different computers, one of which is a clean XP Pro load with no virus checking and nothing installed except SQL server. Also, The recovery options for all the databases are set to "Simple".

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